Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1980-11-03
1981-12-01
Griffin, Donald A.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250480, G03B 1726, G03B 4118
Patent
active
043033270
ABSTRACT:
A cassette for releasably holding a film unit and locating it at an exposure position therein. The cassette includes base and cover sections locatable in a closed position wherein a pressure plate assembly on the cover section is movable toward and away from the base section between a raised film release position and a lowered pressure applying position wherein the film is pressed between opposed bearing surfaces, one of which may be formed by an intensifying screen for x-ray applications, within the cassette to locate the film unit at the exposure position. A simply-constructed, low-cost pressure plate assembly latching system is provided including a pair of latch members having latch tabs thereon which are captured in corresponding detents on the pressure plate assembly to releasably hold the latch members in a cocked unlatching position. In response to movement of the pressure plate assembly to the lowered position, the tabs are released from the detents and the latch members move forwardly automatically to the latching position wherein the tabs engagingly overlie the exterior surface of the pressure plate assembly to hold it in the lowered position.
REFERENCES:
patent: 2878389 (1959-03-01), Raffman
patent: 3233101 (1966-02-01), Forsyth
patent: 3364835 (1968-01-01), Brackett et al.
patent: 3371208 (1968-02-01), Brackett et al.
patent: 3383507 (1968-05-01), Brackett et al.
patent: 4019194 (1977-04-01), Cutler et al.
patent: 4156568 (1979-05-01), Erikson
patent: 4186308 (1980-01-01), Erikson
patent: 4200384 (1980-04-01), Josephson et al.
LaBelle Theodore J.
Sorli Duncan C.
Griffin Donald A.
Polaroid Corporation
Vale John S.
LandOfFree
Film cassette with pressure plate assembly latching system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Film cassette with pressure plate assembly latching system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film cassette with pressure plate assembly latching system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1294352